/Engine/Plugins/Editor/SequencerAnimTools/Source/SequencerAnimTools/Public/Trail.h
Additional Render/HitTest event handling for specific trails, usually let default renderer handle it.
virtual void Render ( const [FGuid](API\Runtime\Core\Misc\FGuid) & Guid, const [FSceneView](API\Runtime\Engine\FSceneView) * View, [FPrimitiveDrawInterface](API\Runtime\Engine\FPrimitiveDrawInterface) * PDI )